Do you always take the same walk? Does she do that if you go for a walk somewhere else (like over your parents house)? Ginger gets very stubborn and drags like that when we go on certain walks because she doesn't want to go in that direction (because something-usually a dog-has scared her on that street, or whatever). Is there a park near you? Does she do the same thing when you go there? Is it something about having the leash on that causes her stress? From what you have said it doesn't sound like a health issue but it sounds like she is either frightened or uncomfortable while walking. Ginger is a very timid dog so I guess I just think of that kind of thing first. Does Kia have any issues like that?